1 files changed, 90 insertions, 0 deletions
diff --git a/headers/src/header_components/utils/mod.rs b/headers/src/header_components/utils/mod.rs
new file mode 100644
index 0000000..a54322a
--- /dev/null
+++ b/headers/src/header_components/utils/mod.rs
@@ -0,0 +1,90 @@
+
+
+pub mod text_partition;
+
+
+#[cfg(feature="serde")]
+pub mod serde {
+    use serde::{
+        Serialize, Deserialize,
+        ser::{Serializer},
+        de::{Deserializer}
+    };
+
+    use chrono::{DateTime, Utc};
+
+    pub mod date_time {
+        use super::*;
+        use serde::de::Error;
+
+        pub fn serialize<S>(dt: &DateTime<Utc>, serializer: S)
+            -> Result<S::Ok, S::Error>
+            where S: Serializer
+        {
+            serializer.serialize_str(&dt.to_rfc2822())
+        }
+
+        pub fn deserialize<'de, D>(deserializer: D)
+            -> Result<DateTime<Utc>, D::Error>
+            where D: Deserializer<'de>
+        {
+            let as_string = String::deserialize(deserializer)?;
+            let date_time = DateTime::parse_from_rfc2822(&as_string)
+                .map_err(|e| D::Error::custom(format!(
+                    "invalid rfc2822 date time: {}", e
+                )))?;
+
+            Ok(date_time.with_timezone(&Utc))
+        }
+    }
+
+    pub mod opt_date_time {
+        use super::*;
+
+        pub fn serialize<S>(
+            dt: &Option<DateTime<Utc>>,
+            serializer: S
+        ) -> Result<S::Ok, S::Error>
+            where S: Serializer
+        {
+            SerOptDateTime::from(dt).serialize(serializer)
+        }
+
+        pub fn deserialize<'de, D>(deserializer: D)
+            -> Result<Option<DateTime<Utc>>, D::Error>
+            where D: Deserializer<'de>
+        {
+            DeOptDateTime::deserialize(deserializer).map(Into::into)
+        }
+
+        #[derive(Deserialize)]
+        enum DeOptDateTime {
+            Some(#[serde(with="super::date_time")] DateTime<Utc>),
+            None
+        }
+
+        impl Into<Option<DateTime<Utc>>> for DeOptDateTime {
+            fn into(self) -> Option<DateTime<Utc>> {
+                match self {
+                    DeOptDateTime::Some(dt) => Some(dt),
+                    DeOptDateTime::None => None
+                }
+            }
+        }
+
+        #[derive(Serialize)]
+        enum SerOptDateTime<'a> {
+            Some(#[serde(with="super::date_time")] &'a DateTime<Utc>),
+            None
+        }
+
+        impl<'a> From<&'a Option<DateTime<Utc>>> for SerOptDateTime<'a> {
+            fn from(val: &'a Option<DateTime<Utc>>) -> Self {
+                match val {
+                    Some(ref dt) => SerOptDateTime::Some(dt),
+                    None => SerOptDateTime::None
+                }
+            }
+        }
+    }
+}
+\ No newline at end of file